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and b/figures/radio_interferometry/trace_overlap_medium.png differ diff --git a/presentations/2023-03-13_step_up_interview/2023-STEP_UP.tex b/presentations/2023-03-13_step_up_interview/2023-STEP_UP.tex index 8e5ffea..e977b91 100644 --- a/presentations/2023-03-13_step_up_interview/2023-STEP_UP.tex +++ b/presentations/2023-03-13_step_up_interview/2023-STEP_UP.tex @@ -19,7 +19,7 @@ \setbeamerfont{page number in head/foot}{size=\normalsize} \setbeamertemplate{footline}[frame number] -\title[]{} +\title[]{Early contest STEP-UP} \date{March $13^{\text{\tiny{th}}}$, 2023} \author{E.T. de Boone} @@ -29,62 +29,112 @@ % Context %%%%%%%%% \begin{frame}{Airshowers from Ultra High Energy particles} - Processes in the cosmos can produce UHE particles + academic curriculum? + + \begin{figure} + \includegraphics[width=\textwidth]{grand/astroparticletypes_grand.jpg} + \end{figure} \end{frame} \begin{frame}{Radio signals and Airshowers} - Airshower split into EM, Muon and Hadron \begin{columns} \begin{column}{0.4\textwidth} + Airshower split into EM, Muon and Hadron \end{column} - \begin{column}{0.6\textwidth} + \begin{column}{0.5\textwidth} \begin{figure} \centering \includegraphics[width=\textwidth]{1607.08781/fig02a_airshower+detectors.png} - \caption{ - \cite{Schroder:2016hrv} - } +% \caption{ +% \cite{Schroder:2016hrv} +% } + \end{figure} + \end{column} + \end{columns} + \begin{figure} + \centering + \includegraphics<2>[width=\textwidth]{airshower/airshower_radio_polarisation.jpg}% + \end{figure} +\end{frame} + +\begin{frame}{Radio Interferometry: Concept} + \begin{columns} + \begin{column}{0.4\textwidth} + \begin{figure} + \includegraphics[width=\textwidth]{radio_interferometry/Schematic_RIT_extracted.png} + \end{figure} + \end{column} + \begin{column}{0.6\textwidth} + \vspace*{\fill} + \begin{itemize} + \item<1-> Measure signal $S_i(t)$ at antenna $\vec{a_i}$ + + \item<2-> Calculate light travel time \\[5pt] + $\Delta_i(\vec{x}) = \frac{ \left| \vec{x} - \vec{a_i} \right| }{c} n_{eff}$ + + \item<2-> Sum waveforms accounting \\ + for time delay \\[5pt] + $S(\vec{x}, t) = \sum S_i( t + \Delta_i(\vec{x}) )$ + \end{itemize} + + \vspace*{\fill} + + \begin{figure}% Spatially + \includegraphics<1>[width=0.8\textwidth]{radio_interferometry/single_trace.png}% + \includegraphics<2>[width=0.8\textwidth]{radio_interferometry/trace_overlap_bad.png}% + \includegraphics<3>[width=0.8\textwidth]{radio_interferometry/trace_overlap_medium.png}% + \includegraphics<4>[width=0.8\textwidth]{radio_interferometry/trace_overlap_best.png}% \end{figure} \end{column} \end{columns} \end{frame} -\begin{frame}{Radio Interferometry} - \begin{columns} - \begin{column}{0.4\textwidth} - \includegraphics[width=\textwidth]{Schematic_RIT_extracted.png} - \end{column} - \begin{column}{0.5\textwidth} - \begin{figure} - \includegraphics[width=\textwidth]{2006.10348/fig01.png} - \caption{ - \cite{Schoorlemmer:2020low} - } - \end{figure} - \end{column} - \end{columns} - -\end{frame} - % My Internship %%%%%%%%%%%%%%% \begin{frame}{Timing Constraint for Radio Interferometry} - RI requires $\sigma_t < 1 \mathrm{ns}$\\ - GPS clock accuracy in current experiments not enough, with $\sigma_t \sim 8\mathrm{ns}$\\ - - \vskip 1em - $\mapsto$ my internship - \\ - hardware delays\\ - beacon simulations + \vspace*{ -2em } + Required time accuracy $< 1 \mathrm{ns}$ not provided by GNSS $ \gtrsim 5 \mathrm{ns}$. + \vspace{ 2em } + \begin{columns} + \begin{column}{0.4\textwidth} + Additional synchronisation + using physics band + \begin{itemize} + \item Pulsed beacon + \item Long period ($\sim 1 \mathrm{\mu s}$)% (AERA) + \item<3-> Short period ($\lesssim 20 \mathrm{ns}$) + \end{itemize} + \end{column} + \begin{column}{0.6\textwidth} + \begin{figure}% Clock error fixes + \includegraphics<1>[width=\textwidth]{radio_interferometry/trace_overlap/dc_grid_power_time_fixes.py.scale4d.best.trace_overlap.zoomed.repair_none.png}% + \includegraphics<2>[width=\textwidth]{radio_interferometry/trace_overlap/dc_grid_power_time_fixes.py.scale4d.best.trace_overlap.zoomed.no_offset.png}% + \includegraphics<3>[width=\textwidth]{radio_interferometry/trace_overlap/dc_grid_power_time_fixes.py.scale4d.best.trace_overlap.zoomed.repair_phases.png}% + \includegraphics<4>[width=\textwidth]{radio_interferometry/trace_overlap/dc_grid_power_time_fixes.py.scale4d.best.trace_overlap.zoomed.repair_all.png}% + \end{figure} + \end{column} + \end{columns} \end{frame} - % Towards GRAND %%%%%%%%%%%%%%%%%%%% \begin{frame}{Advantages of Radio Interferometry} - trace airshower longitudinal development\\ - lower snr threshold + \begin{columns} + \begin{column}{0.4\textwidth} + \begin{itemize} + \item Trace longitudinal development of airshower + \item Lower SNR threshold + \end{itemize} + \end{column} + \begin{column}{0.6\textwidth} + \begin{figure} + \includegraphics[width=\textwidth]{2006.10348/fig01.png} +% \caption{ +% \cite{Schoorlemmer:2020low} +% } + \end{figure} + \end{column} + \end{columns} \end{frame} \begin{frame}{Physics Improvement of Radio Interferometry} @@ -93,6 +143,19 @@ direction reconstruction improved\\ relevance for $\nu$s pointing back to sources + +% \visible<2->{ +% \vspace*{\fill} +% \begin{center} +% \begin{minipage}{.6\textwidth} +% \hrule +% \centering +% \vspace{10pt} +% \textit{Thank you!} +% \end{minipage} +% \end{center} +% \vspace{\stretch{2}} +% } \end{frame} @@ -100,7 +163,69 @@ % Backup slides %%%%%%%%%%%%%%% \appendix -\frame{Back-up slides} +\section{Supplemental material} +\begin{frame}[c] + \centering + Supplemental material +\end{frame} + +%%%%%%%%% +\subsection{Single frequency beacon synchronisation} + +\begin{frame}{Short period beacon synchronisation} + \begin{figure} + \includegraphics<1>[width=\textwidth]{beacon/08_beacon_sync_timing_outline.pdf}% + \includegraphics<2>[width=\textwidth]{beacon/08_beacon_sync_synchronised_outline.pdf}% + \includegraphics<3>[width=\textwidth]{beacon/08_beacon_sync_synchronised_period_alignment.pdf}% + \end{figure} +\end{frame} + + +\begin{frame}{Time resolving short period beacon} + \begin{figure} + \includegraphics<1>[width=\textwidth]{radio_interferometry/dc_grid_power_time_fixes.py.X400.repair_none.scale4d.pdf} + \includegraphics<2>[width=\textwidth]{radio_interferometry/dc_grid_power_time_fixes.py.X400.repair_phases.scale4d.pdf} + \includegraphics<3>[width=\textwidth]{radio_interferometry/dc_grid_power_time_fixes.py.X400.repair_all.scale4d.pdf} + \includegraphics<4>[width=\textwidth]{radio_interferometry/dc_grid_power_time_fixes.py.X400.no_offset.scale4d.pdf} + \end{figure} +\end{frame} + +%%%%%%%%%% +\subsection{GNSS clock stability} +\begin{frame}{GNSS clock stability I} + \begin{columns} + \begin{column}{0.4\textwidth} + \begin{figure} + \centering + \includegraphics[width=0.8\textwidth]{grand/setup/antenna-to-adc.pdf} + \caption{ + GRAND Digitizer Unit's ADC to antennae + } + \end{figure} + \end{column} + \hfill + \begin{column}{0.5\textwidth} + \begin{figure} + \includegraphics[width=\textwidth]{grand/setup/channel-delay-setup.pdf}% + \caption{ + Channel filterchain delay experiment + } + \end{figure} + \end{column} + \end{columns} +\end{frame} + +\begin{frame}{GNSS clock stability II} + \begin{figure} + \centering + \includegraphics[width=0.7\textwidth]{grand/setup/grand-gps-setup.pdf} + \caption{ + GNSS stability experiment + } + \end{figure} +\end{frame} + + %%%%%%%%%%%%%%